← The Crow · Repertoire Atlas
Cluster · assembly
Assembly.
Loud, far-carrying calls that summon group members to a roost or food source. Acoustically distinct from territorial in rate and inter-call interval.
v1 corpus · 4 CC-licensed recordings · AI narration available
AI interpretation · Assembly
Assembly calls are public-address announcements. A foraging discovery, a settling roost, and a bird launches loud, far-carrying calls designed to summon the group. Where territorial calls keep neighbors at arm's length, assembly calls draw the crowd in. The difference shows up in the inter-call interval, not the spectral shape — and the AI hears it instantly. Four recordings sit in this cluster, including two from urban roosts of roughly twenty-thousand birds. The acoustic density of those roosts is something static spectrograms barely capture. The whole tree, calling at once.
Recordings in this cluster
4 exemplars, real spectrograms, full attribution.
2012-09-15
Corvus brachyrhynchos - American Crow XC110263
Assembly / flock26 s · 200 Hz – 8 kHzCorvus brachyrhynchos - American Crow XC110263.mp3A variety of calls from a small flock of crows high in a stand of pine at a suburban nature preserve.
2013-11-08
Corvus brachyrhynchos - American Crow XC155440
Assembly / flock201 s · 200 Hz – 8 kHzCorvus brachyrhynchos - American Crow XC155440.mp3Calls from a flock of approximately 30 birds in a large elm tree in residential neighborhood.
2014-01-17
Corvus brachyrhynchos - American Crow XC164832
Assembly / flock541 s · 200 Hz – 8 kHzCorvus brachyrhynchos - American Crow XC164832.mp3Calls from an urban roosting flock of perhaps 20000 in the trees around my house. An amazing experience. Entire trees dripping with crows. Periodically a tree would explode into a swirling crow vortex. Significantly
2014-01-16
Corvus brachyrhynchos - American Crow XC164831
Assembly / flock224 s · 200 Hz – 8 kHzCorvus brachyrhynchos - American Crow XC164831.mp3Calls from an urban roosting flock of perhaps 20000 in the trees around my house. Not the greatest recording, but a fantastic experience. Entire trees dripping with crows. Most of the birds are roosting quietly, som
Behavioral-context probabilities
What happens when this cluster fires.
- Recruitment
- 65%
- Foraging
- 18%
- Affiliative
- 12%
- Other
- 5%
Probabilities are cluster-wide estimates from the behavioral-context classifier in the methods pipeline. Not per-clip — individual recordings sit somewhere within this distribution.
Frequently asked
What people ask about assembly.
- What is the assembly cluster?
- Loud, far-carrying calls that summon group members to a roost or food source. Acoustically distinct from territorial in rate and inter-call interval.
- How many assembly recordings does CrowLingo have?
- Crowlingo's v1 corpus contains 4 CC-licensed assembly recordings, sourced from Wikimedia Commons (Category: Audio files of Corvus brachyrhynchos).
- How does AI interpret the assembly cluster?
- Assembly calls are public-address announcements. A foraging discovery, a settling roost, and a bird launches loud, far-carrying calls designed to summon the group. Where territorial calls keep neighbors at arm's length, assembly calls draw the crowd in. The difference shows up in the inter-call interval, not the spectral shape — and the AI hears it instantly. Four recordings sit in this cluster, including two from urban roosts of roughly twenty-thousand birds. The acoustic density of those roosts is something static spectrograms barely capture. The whole tree, calling at once.
Other clusters